Method of producing printed products

    公开(公告)号:US10252549B2

    公开(公告)日:2019-04-09

    申请号:US15604913

    申请日:2017-05-25

    Abstract: A printed product is produced by applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process, applying a substantially colorless and water-containing liquid a) to non-image regions and/or b) to image regions that have little ink in a drop-on-demand process and drying the printing material. In this case, the printing material has a coating with at least one acid. After applying ink and applying the liquid, a water-containing further liquid is applied both to image regions and to non-image regions of the printing material. The first-mentioned liquid and/or the further liquid contains at least one substance for at least partly neutralizing the acid. The undesired formation of crease waves or curls and glossiness fluctuations between varnished image areas and varnished non-image areas is thus advantageously avoided.

    Ink jet printing apparatus and color conversion processing device

    公开(公告)号:US10112410B2

    公开(公告)日:2018-10-30

    申请号:US15713709

    申请日:2017-09-25

    Inventor: Jun Yamanobe

    Abstract: There are provided an ink jet printing apparatus and a color conversion processing device that can prevent the generation of offset and blocking and can stably jet ink. A first LUT in which a total amount of ink after conversion is large overall and a second LUT in which a total amount of ink after conversion is small overall are prepared as a look-up table (LUT) that is used in color conversion processing. A LUT to be used is selected according to the number of printed mediums. The first LUT is selected in a case in which the number of printed mediums is smaller than a threshold value, and the second LUT is selected in a case in which the number of printed mediums is equal to or larger than a threshold value.

    Image recording device
    3.
    发明授权
    Image recording device 有权
    图像记录装置

    公开(公告)号:US09440432B2

    公开(公告)日:2016-09-13

    申请号:US15072358

    申请日:2016-03-17

    Inventor: Jun Yamanobe

    Abstract: In an image recording device, in a case where a J-th nozzle (H2 [3]) of a certain image recording head (H2) among plural image recording heads (H1, H2) is in a discharge defect state, a dot size of an image recording droplet discharged from a J-th nozzle (H1 [3]) of an image recording head (H1) other than the image recording head (H2) is changed to a size within dot sizes used in normal image recording in a high-speed image recording mode, which is larger than a dot size of an image recording droplet to be discharged from the discharging nozzle (H2 [3]). In a low-speed image recording mode, the dot size of the image recording droplet discharged from the discharging nozzle (H1 [3]) is changed to a size which is larger than the largest dot size among dot sizes used in the normal image recording.

    Abstract translation: 在图像记录装置中,在多个图像记录头(H1,H2)中的某个图像记录头(H2)的第J个喷嘴(H2 [3])处于放电缺陷状态的情况下, 从图像记录头(H2)以外的图像记录头(H1)的第J个喷嘴(H1 [3])排出的图像记录液滴的尺寸变为在正常图像记录中使用的点尺寸内的尺寸 高于图像记录模式,其大于从排出喷嘴排出的图像记录液滴的点尺寸(H2 [3])。 在低速图像记录模式中,从排出喷嘴(H1 [3])排出的图像记录液滴的点尺寸变为比普通图像记录中使用的点尺寸之中的最大点尺寸大的尺寸 。

    Head device, liquid jetting apparatus, and head maintenance method

    公开(公告)号:US11945223B2

    公开(公告)日:2024-04-02

    申请号:US17707889

    申请日:2022-03-29

    Abstract: To provide a head device, a liquid jetting apparatus, and a head maintenance method with which it is possible to suppress a decrease in performance of a liquid-repellent film on a nozzle surface that is caused by a wiping process with respect to the nozzle surface. Provided is a head device including an ink jet head (10) in which a liquid-repellent film (10B) is formed on a nozzle surface (10A) and a head control unit. The head control unit applies a negative pressure to liquid in a nozzle, performs a non-jetting driving operation of causing the liquid in the nozzle to vibrate without being jetted, and stops the non-jetting driving operation for a wiping target nozzle (12A) with which a wiping member (22) to be used in a wiping process comes into contact in a case where the wiping process with respect to the nozzle surface is to be performed.

    Liquid ejection device and cleaning method

    公开(公告)号:US09878546B2

    公开(公告)日:2018-01-30

    申请号:US15428148

    申请日:2017-02-09

    Inventor: Jun Yamanobe

    Abstract: When a liquid ejection head and a first wiping unit are moved relatively to clean a surface, the first wiping unit making a first wiping member travel in a first direction, a direction opposite to the first direction is used as a moving direction of the head with reference to the first wiping member in relative moving therebetween. When the head and a second wiping unit are moved relatively to each other to clean the surface, the second wiping unit making a second wiping member travel in a second direction having a component of a direction opposite to the first direction, a direction opposite to the second direction is used as a moving direction of the head with reference to the second wiping member in relative moving therebetween to move the second wiping unit and the head relatively to clean the same area on the surface.

    Ink jet recording apparatus and abnormality detection method of ejector
    7.
    发明授权
    Ink jet recording apparatus and abnormality detection method of ejector 有权
    喷墨记录装置和喷射器的异常检测方法

    公开(公告)号:US09573363B2

    公开(公告)日:2017-02-21

    申请号:US14716129

    申请日:2015-05-19

    Abstract: Provided are an ink jet recording apparatus and an abnormality detection method of an ejector which are capable of performing high-accuracy abnormality detection and suppressing the generation of excessive abnormality detection with respect to a required image quality. An ink jet recording apparatus (10) includes an ink jet head (20C, 20M, 20Y, 20K) having a plurality of ejectors, a medium transport unit (22), a calculation unit (34) that calculates an index value relevant to a droplet ejection amount for each ejector on the basis of printing data, a threshold determination unit (40) that determines a threshold for ejection abnormality determination for each ejector in accordance with the index value, a threshold storage unit (44) that stores the threshold determined for each ejector, and an abnormality determination unit (54) that determines the presence or absence of ejection abnormality by comparing the threshold with a measurement amount for each ejector.

    Abstract translation: 提供了能够进行高精度异常检测并且抑制相对于所需图像质量的过度异常检测的产生的喷射器的喷墨记录装置和异常检测方法。 喷墨记录装置(10)包括具有多个喷射器的喷墨头(20C,20M,20Y,20K),介质传送单元(22),计算单元(34),计算与 基于打印数据的每个喷射器的液滴喷射量,根据所述指标值确定每个喷射器的喷射异常确定的阈值的阈值确定单元(40),存储所确定的阈值的阈值存储单元(44) 以及通过将阈值与每个喷射器的测量量进行比较来确定喷射异常的存在或不存在的异常判定单元(54)。

    Image forming apparatus
    8.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US09108441B2

    公开(公告)日:2015-08-18

    申请号:US13951309

    申请日:2013-07-25

    Inventor: Jun Yamanobe

    CPC classification number: B41J13/0036 B41J3/60 B41J11/002 B41J13/009

    Abstract: An image forming apparatus includes: a recording material applying member configured to apply a recording material to a recording medium; a fixing member configured to fix a recording material to the medium; a first transportation unit configured to transport the medium to the recording material applying member and the fixing member; a discharge unit configured to discharge the medium; a second transportation unit configured to return the medium to the recording material applying unit; a reverse unit configured to reverse front and back surfaces of the recording medium provided in the second transportation unit; a transportation path switching unit configured to transport the medium to the discharge unit or the second transportation unit; and a control device configured to control the transportation path switching unit so as to transport the medium to the discharge unit when a fixing ability of the fixing member is decreased.

    Abstract translation: 图像形成装置包括:记录材料施加构件,被配置为将记录材料施加到记录介质; 固定构件,其将记录材料固定到所述介质上; 构造成将介质输送到记录材料施加构件和固定构件的第一输送单元; 排出单元,其构造成排出介质; 配置为将介质返回到记录材料施加单元的第二传送单元; 反转单元,被配置为反转设置在第二传送单元中的记录介质的前表面和后表面; 输送路径切换单元,其构造成将所述介质输送到所述排出单元或所述第二输送单元; 以及控制装置,被配置为当所述固定构件的定影能力降低时,控制所述输送路径切换单元以将所述介质输送到所述排出单元。

    Image forming apparatus and image forming method
    9.
    发明授权
    Image forming apparatus and image forming method 有权
    图像形成装置及图像形成方法

    公开(公告)号:US09004637B2

    公开(公告)日:2015-04-14

    申请号:US13958236

    申请日:2013-08-02

    CPC classification number: B41J2/12 B41J2/2142

    Abstract: An image forming apparatus includes a discharge disabling unit configured to disable a discharge operation of a defective nozzle, which is in a defective discharge state, among a plurality of nozzles configured to discharge liquid droplets to a recording medium, when a value obtained by quantifying a degree of defective state of the defective nozzle is greater than a discharge disable threshold value; a complement unit configured to complement an image defect using two nozzles on either side of the defective nozzle of which discharge operation is disabled; and a threshold value change unit configured to change the discharge disable threshold value depending on a discharge order between the nozzles which complement the image defect and nozzles adjacent to the nozzles which complement the image defect.

    Abstract translation: 图像形成装置包括:排出禁止单元,被配置为在被配置为将液滴喷射到记录介质上的多个喷嘴中的不良喷出状态下的不良喷嘴的排出操作时,当通过量化 缺陷喷嘴的缺陷状态程度大于放电禁止阈值; 补充单元,被配置为使用在其中禁用放电操作的缺陷喷嘴的两侧上的两个喷嘴来补偿图像缺陷; 以及阈值改变单元,被配置为根据补充图像缺陷的喷嘴与补充图像缺陷的喷嘴相邻的喷嘴之间的排出顺序来改变放电禁止阈值。

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